Home / 5,921.78-8,172.08-3,269.28

Finding the Fourth Proportional to 5,921.78, 8,172.08 and 3,269.28

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Solution

The fourth proportional to 5,921.78, 8,172.08 and 3,269.28 is: 4,511.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,921.78 : 8,172.08 = 3,269.28 : x
  2. Step 2: Convert to fraction form
    5,921.78/8,172.08 = 3,269.28/x
  3. Step 3: Cross multiply
    5,921.78x = 8,172.08 × 3,269.28
  4. Step 4: Simplify right side
    5,921.78x = 26,716,817.70
  5. Step 5: Solve for x
    x = 26,716,817.70/5,921.78
  6. Step 6: Final answer
    x = 4,511.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.